If your shower door slides along tracks and has sliding rollers (sometimes called sliding Hinges), the solutions depend on the specific symptoms. Here are some of the most common problems and their solutions.
If the door is difficult to slide:
Thoroughly clean the top and bottom tracks.
Remove soap scum, hair, and mineral deposits.
Use warm water and a mild detergent, or a vinegar solution to clean limescale.
Clean the rollers with a toothbrush.
If the manufacturer allows, apply a silicone-based lubricant to the rollers. Avoid using oil-based lubricants, as they tend to attract dust.
If the door is off track:
Lift the door up to disengage it from the bottom track.
Til the bottom of the door outwards.
Place the top rollers back onto the top track.
Make sure the bottom track is properly securing the door before testing.
Because shower doors are made of tempered glass, have someone help hold the door during reinstallation.
If the door is loose or crooked:
Many sliding shower doors come with adjustable roller brackets.
Locate the screws near the top roller.
Loosen them slightly.
Lift or lower one side of the door until it closes smoothly and level.
Tighten the screws.
If the roller is worn or damaged
Signs include:
Flat spots on the roller
Cracked plastic
Excessive wobbling
Door repeatedly derailing
In this case, replacing the roller is usually the best solution. Measure:
Roller diameter
Distance between mounting holes
Glass thickness
Roller type (single or double roller)
Then purchase a matching replacement roller.
If the door is stuck in place
Check the track for:
Dents
Bends
Loose screws
Debris inside the track
Slight bends can sometimes be carefully straightened with pliers wrapped in cloth, but severely damaged tracks should be replaced.
Safety Tips
Never force a door open if it is stuck.
Do not overtighten the screws securing the tempered glass.
Wear gloves and safety goggles when handling the door.